Grouping palette bypass bins for video coding

A method of encoding video data, the method comprising:

• encoding, in accordance with a syntax table that specifies a coding order for a coded video bitstream and using context adaptive binary arithmetic coding (CABAC) with a context, a syntax element in the coded video bitstream that indicates whether a transpose process is applied to palette indices of a current palette for a current block of video data;
• encoding, in accordance with the syntax table and in the coded video bitstream, one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data, wherein the syntax table specifies that the one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data are encoded after the syntax element that indicates whether the transpose process is applied to palette indices of the current palette for the current block of video data;
• encoding, in accordance with the syntax table and in the coded video bitstream, a group of syntax elements using Bypass mode, wherein the group of syntax elements comprises:
• one or more syntax elements that indicate a number of zeros that precede a non-zero entry in an array that indicates whether entries from a predictor palette are reused in the current palette;
• a syntax element that indicates a number of entries in the current palette that are explicitly signalled;
• one or more syntax elements that each indicate a value of a component in an entry in the current palette;
• a syntax element that indicates whether the current block of video data includes at least one escape coded sample;
• a syntax element that indicates a number of indices in the current palette that are explicitly signalled or inferred;
• and
• one or more syntax elements that indicate indices in an array of entries of the current palette;
• and
• encoding the current block of video data based on the current palette for the current block of video data, the group of syntax elements, and the one or more syntax elements related to delta QP and/or chroma QP offsets for the current block of video data.

A device for encoding or decoding video data, the device comprising:

• a memory configured to store video data;
• one or more processors configured to:
• encode or decode, in accordance with a syntax table that specifies a parsing order for a coded video bitstream and using context adaptive binary arithmetic coding (CABAC) with a context, a syntax element via the coded video bitstream that indicates whether a transpose process is applied to palette indices of a current palette for a current block of video data;
• encode or decode, in accordance with the syntax table and via the coded video bitstream and using CABAC with a context, one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data, wherein the syntax table specifies that the one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data are parsed after the syntax element that indicates whether the transpose process is applied to palette indices of the current palette for the current block of video data;
• encode or decode, in accordance with the syntax table and via the coded video bitstream, a group of syntax elements using Bypass mode, wherein the group of syntax elements comprises:
• one or more syntax elements that indicate a number of zeros that precede a non-zero entry in an array that indicates whether entries from a predictor palette are reused in the current palette;
• a syntax element that indicates a number of entries in the current palette that are explicitly signalled;
• one or more syntax elements that each indicate a value of a component in an entry in the current palette;
• a syntax element that indicates whether the current block of video data includes at least one escape coded sample;
• a syntax element that indicates a number of indices in the current palette that are explicitly signalled or inferred;
• and
• one or more syntax elements that indicate indices in an array of entries of the current palette;
• and
• encode or decode the current block of video data based on the current palette for the current block of video data, the group of syntax elements, and the one or more syntax elements related to delta QP and/or chroma QP offsets for the current block of video data.

A device for decoding video data, the device comprising:

• means for parsing, in accordance with a syntax table that specifies a parsing order for a coded video bitstream and using context adaptive binary arithmetic coding (CABAC) with a context, a syntax element from the coded video bitstream that indicates whether a transpose process is applied to palette indices of a current palette for a current block of video data;
• means for parsing, in accordance with the syntax table and from the coded video bitstream and using CABAC with a context, one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data, wherein the syntax table specifies that the one or more syntax elements related to delta quantization parameter (QP) and/or chroma QP offsets for the current block of video data are parsed after the syntax element that indicates whether the transpose process is applied to palette indices of the current palette for the current block of video data;
• means for parsing, in accordance with the syntax table and from the coded video bitstream, a group of syntax elements using Bypass mode, wherein the group of syntax elements comprises:
• one or more syntax elements that indicate a number of zeros that precede a non-zero entry in an array that indicates whether entries from a predictor palette are reused in the current palette;
• a syntax element that indicates a number of entries in the current palette that are explicitly signalled;
• one or more syntax elements that each indicate a value of a component in an entry in the current palette;
• a syntax element that indicates whether the current block of video data includes at least one escape coded sample;
• a syntax element that indicates a number of indices in the current palette that are explicitly signalled or inferred;
• and
• one or more syntax elements that indicate indices in an array of entries of the current palette;
• and
• means for decoding the current block of video data based on the current palette for the current block of video data, the group of syntax elements, and the one or more syntax elements related to delta QP and/or chroma QP offsets for the current block of video data.

A non-transitory computer-readable storage medium storing at least a portion of a coded video bitstream that, when processed by a video decoding device in accordance with a syntax table, cause one or more processors of the video decoding device to:

• determine whether a transpose process is applied to palette indices of a current palette for a current block of video data;
• generate the current palette for the current block of video data based on:
• one or more syntax elements that indicate a number of zeros that precede a non-zero entry in an array that indicates whether entries from a predictor palette are reused in the current palette;
• a syntax element that indicates a number of entries in the current palette that are explicitly signalled;
• one or more syntax elements that each indicate a value of a component in an entry in the current palette;
• a syntax element that indicates whether the current block of video data includes at least one escape coded sample;
• a syntax element that indicates a number of indices in the current palette that are explicitly signalled or inferred;
• and
• one or more syntax elements that indicate indices in an array of entries of the current palette;
• and
• decode the current block of the video data based on the current palette for the current block of video data and a delta quantization parameter (QP) and one or more chroma QP offsets for the current block of video data,
• wherein one or more syntax elements related to the delta QP and one or more syntax elements related to the one or more chroma QP offsets for the current block of video data are located at a position in the syntax table that is after a syntax element that indicates whether the transpose process is applied to palette indices of the current palette for the current block of video data, wherein the syntax element that indicates whether the transpose process is applied to palette indices of the current palette for the current block of video data is decoded using context adaptive binary arithmetic coding (CABAC) with a context, wherein at least one of the one or more syntax elements related to the delta QP and one or more syntax elements related to the one or more chroma QP offsets is decoded using CABAC with a context, and wherein the group of syntax elements are decoded using Bypass mode.